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Mark Cunningham Week 6: February 22 nd , 2007

Mark Cunningham Week 6: February 22 nd , 2007. Communications Team, Comm. SATs CAD, TV/ET/MT Groups Communication Satellites Mass Estimates, Communication System Mass Power Volume Summery. Communication System Mass, Power, Volume Summery. TV *Gimbaled 4m dish: 115kg, 5kW, 1.35m 3 TC

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Mark Cunningham Week 6: February 22 nd , 2007

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  1. Mark CunninghamWeek 6: February 22nd, 2007 Communications Team, Comm. SATs CAD, TV/ET/MT Groups Communication Satellites Mass Estimates, Communication System Mass Power Volume Summery

  2. Communication System Mass, Power, Volume Summery • TV • *Gimbaled 4m dish: 115kg, 5kW, 1.35m3 • TC • *Storable gimbaled 1m dish: 1.8kg, 1kW, .021m3 • Low gain antenna for takeoff and landing: ? • HAB • 1m dish: 1.8kg, 1kW, .021m3 • MMR and RMR • *Gimbaled 1m dish: 1.8kg, 1kW, .021m3 • Gangale Comm Satellites • Two 7m dishes: 1220kg, 15.75kW, 14.4m3 • Primary Mars Comm Satellite • 7m dish, two 2m dishes: 638kg, 1kW, 7.5 • Secondary Mars Comm Satellites • Two 7m dishes: 1220kg, 1kW, 14.4m3 *numbers will increase slightly Note: dish sizes are diameters

  3. Communication Satellites Mass Estimates List of comparable 2 dish communications satellites Name diameters (m) mass (mt) TDRS-H-I 5 3.2 TDRS-1-7 4.9 2.24 Kondor 6 2.6 Our Gangale and Mars communications satellites will probably be around 3.5-4 mt

  4. Back Up Slides

  5. CAD to find Volume

  6. Dish Masses Dish Diameters (m) Dish Mass (kg) 1 1.7871 2 14.2968 3 48.0815 4 114.034 5 222.7918 6 384.9924 7 611.3584 8 912.272 Deployed Dish Volume (m^3) 0.021 0.168 0.565 1.34 2.618 4.524 7.184 10.72

  7. References • Human Space Flight • Larson and Pranke • Chapter 27 • http://www.gsfc.nasa.gov/gsfc/earth/pictures/20021127tdrs_j/tdrs_jmedia.htm • http://www.astronautix.com/craft/tdrs.htm • http://www.astronautix.com/craft/kondor.htm

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